Combined Use of SFCL and SMES for Augmenting FRT Performance and Smoothing Output Power of PMSG Based Wind Turbine

Lei Chen, Guocheng Li, Hongkun Chen, L. Koh
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引用次数: 2

Abstract

Concerning the integration of renewable energy in the power grid, some key technical issues should be given enough attention, such as the capability of fault ride through (FRT) and the smoothness of output power. In this paper, the combined use of a resistive-type superconducting fault current Iimiter (SFCL) and a superconducting magnetic energy storage (SMES) is proposed, and it is expected to improve the transient performance of a permanent magnet synchronous generator (PMSG) based wind turbine system under fault conditions. The SFCL is installed near the line side converter (LSC) of the wind turbine system, and its functions are to suppress the fault current and compensate the terminal voltage. The SMES is coupled to the wind turbine system’s DC-link, and it aims to alleviate the power difference between the generator side converter (GSC) and the LSC. Thus, the output power can be smoothed, and the DC-link overvoltage will be mitigated. Related theoretical modelling analysis is conducted, and further a detailed simulation model of 1.5 MW PMSG-based wind turbine integrated with the SFCL-SMES is built in MATLAB/SIMULINK. The simulations are performed to check the effects of the SFCL-SMES on handling the three-phase short-circuit. From the simulation results, the effectiveness of the proposed approach on augmenting the FRT capability and smoothing the power fluctuation of the PMSG can be well confirmed.
SFCL和SMES联合应用提高PMSG风力发电机的FRT性能和平滑输出功率
在可再生能源并网过程中,一些关键的技术问题应得到足够的重视,如故障穿越能力和输出功率的平稳性。本文提出了电阻式超导故障限流器(SFCL)与超导磁储能器(SMES)的组合使用,以期改善基于永磁同步发电机(PMSG)的风力发电系统在故障条件下的暂态性能。SFCL安装在风力发电系统的线侧变流器(LSC)附近,其作用是抑制故障电流和补偿终端电压。SMES与风力涡轮机系统的直流链路耦合,旨在减轻发电机侧变流器(GSC)和LSC之间的功率差异。因此,输出功率可以平滑,直流链路过电压将得到缓解。进行了相关的理论建模分析,并在MATLAB/SIMULINK中建立了集成SFCL-SMES的1.5 MW pmsg风力发电机组的详细仿真模型。通过仿真验证了SFCL-SMES处理三相短路的效果。仿真结果表明,所提出的方法在增强预滤波能力和平滑PMSG功率波动方面是有效的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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